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The "S" model Dell's (and other brands that use compact cases) use a "TFX" power supply, not the more common ATX style. This limits you with the power supply and to "Low Profile" type expansion cards.

As others have recommended, you will be better off with a new/full size case, that can use the standard ATX power supply, along with other standard components.

They are changing the motherboard is the power supply for the graphics card?the shop mentioned i wouldn't be able to get an i7 and buying a new computer costs more than the upgrade they are close to $1,000 and i don't want to have windows 8 as a operating system i like windows 7 better they already told me in 09 when i bought the dell 545s i saw the dell 545 the larger desktop it had a quas core but the price was $800 and i didn't know if i could change the processor it was a Q6600 i think

The power supply powers everything in the PC. If you're having a dedicated GPU you'll need at least a 450W PSU, maybe higher depending on what GPU you get. That case doesn't lend itself to performance hardware though as it offers little to no cooling, things will get very hot in there. I'd also recommend a decent CPU cooler too, the stock AMD ones aren't the best.

I'd opt for the shop to build you a new PC. What is your monitor input? VGA/DVI/HDMI? Check the specs of whichever GPU you choose for compatibility, or post here which one you choose and someone will let you know whether it's compatible or not. Getting Windows 7 onto the machine should not be a problem either, there are a host of places you can buy a copy or license.

my cable ithat connects to monitor is blue so i think thats vga When casting i want to cast in 1080p the resolution 1920x1080 i can't do now on my pc so i need something that will accomplish that a user from xsplit said i need a better graphics card along with processor to cast in 1920x1080 1080p i can spend a little over $200 but nothing at $300 for processor

Upgrading computer

Upgrading computer - HELPHey there, i currently have a packard bell imedia A3317:
Packard Bell iMedia A3317 review - PC Advisor
I have upgraded the PSU to a 550W and the graphics card to a AMD Sapphire HD 4830
However my computer is incredibly loud, and it gets so hot that it burns to touch, and any usbs that i...

PC Custom Builds and Overclocking

Upgrading my ComputerI'm really into modding my copy of Skyrim, so much so that even my system finds it hard going!
i7 3820 Sandy Bridge (unclocked)
16Gb Ram
GeForce GTX 580
I get stuttering and even CTDs if too much happenes on screen at once. So I was thinking of both overclocking the i7, upgrading to a GTX...

Performance & Maintenance

Upgrading my ComputerGiven my specs, what's the most effective way to improve my computer's performance?
Sorry for the vague question. Let me know if you need any more information.

Upgrading Computer Questions..I just recently upgraded to Windows 7 and now I would like to upgrade my computer.
I have a technical question about hardware:
Mobo that i want to buy is a Biostar T5XE CFX-SLI, I currently have a Asus A8n Sli-Deluxe. Would the new mobo fit in the same case that the Asus fits in? I do not...